Agitating-machine for cyaniding.



(No Model.)

375. Patented Dec 31, I90l.

a. R UBSCH, 1R. AGITATING' MACHINE FUR GY'ANIDING.

(Application filed Mar 14, 1901.)

U rrnn TATES 1 ATENT Wilma GEORGE RUBSOH, JR., OF LOS ANGELES,CALIFORNIA, ASSIGNOR OF ONE- HALF TO PRESTON K. ,WOOD, OF LOS ANGELES,CALIFORNIA.

AGlTATlNG-MACHINE FOR CYANIDING.

SFIECIFICATION forming part Of Letters Patent N 0. 690,375, datedDecember 31, 1901. Application filed March 14, 1901. Serial No. 51,205.(No model.)

T0 to whom it may concern:

Be it known that I, GEORGE RUBSOH, J r., a citizen of the United States,residing at Los Angeles, in the county of Los Augeles and State ofCalifornia, have invented new and useful Improvements inAgitating-ll/Iachines for Oyaniding, of which the following is aspecification.

My invention relates to the treatment of gold and silver ores, tailings,&c., for the extraction of the precious metal therefrom by what is knownas the cyanid process; and the object thereofis to provide a machine ofsimple construction which will effect said object in a more expeditiousmanner than has heretofore been possible. I accomplish this object bythe machine described herein and illustrated in the accompanyingdrawing, which is a central vertical section thereof,

parts of the pump being shown in elevation.

In the drawing, A is the wooden frame, to which is affixed thecylindrical tank B, in the bottom of which is the conical-shapedpartition 0, which separates the lower part fromthe other parts, therebyforming heatingchamber D, which is entirely disconnected from the otherpart of the tank, which I call the agitating-tank E. Centrally disposedin the agitating-tank is a rotary pump F,which raises the solution andtailings from the bottom of the agitating-tank and discharges it againstthe deflecting-plate G, affixed to and revolving with the shaft H of thepump and vertically adjustable thereon, a set-screw G in the shank ofthe deflector being provided for that purpose, thereby causing thesolution and ore to be deposited in a thin sheet over the conical-shapedstationary deflector I, affixed to the casing of the pump. The solutionruns to the edge of the agitating-tank, into which it passes at a pointdirectly above the top part of the conical bottom thereof, therebyafiording more perfect circulation in the agitating-tank. During thetime the solution is passing from the deflecting-plate and over thestationary deflector it is subjected to the action of the atmospherethereon, which greatly facilitates the action of the cyanid solution inseparating the metal from the gangue. WVhere the pulp carries free gold,

before I add the cyanid solution I run it through the agitatingtank withsufficient water to make a thin solution. I also place removable copperamalgamating plates N upon the stationary deflector, which willamalgamate the free gold as the pulp passes thereacross. After the freegold is extracted I remove the amalgamating-plates and add the cyanidsolution to the pulp and treat it as before described.

When the Weather is cold I, discharge the exhaust-steam from the engine(not shown) into the heating-chamber through inlet-pipe J, from which itis discharged through outletpipe K at the top of and beyond partition L,which passes across the heating-chamber, and thereby causes the steam topass almost entirely around the bottom of the agitatingtank before itcan escape from the heatingchamber. Any water which may condense fromthe steam passes out through the wastepipe M. When the pulp isthoroughly agitated, it is discharged through the dischargepipe 0, cockP being first opened into settling-tanks. (Not shown.) Any other meansmay be adopted for heating the chamber below the agitating-tank.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. An agitating-machine for treatment of gold and silver ores by thecyanid process,

comprising an agitating-tank, having a con-.

ical bottom; a rotary pump centrally disposed in said tank; a rotarydeflector affixed to the shaft of the rotary pump, and verticallyadjustable thereon; and a stationary deflectorplate below the rotarydeflector, adaptedto deflect the solution to near the edge of theagitating-tank.

2. An agitating-machine for the treatment of gold and silver ore by thecyanid process, comprising an agitating-tank, having a conical bottom; aheating-chamber surrounding the conical bottom of the agitating-tank;means to heat said chamber; a rotary pump, centrally disposed in theagitating-tank, adapted to take the solution from the bottom of the tankand discharge it above the top thereof; a rotary deflector, adapted todistribute the solution over a stationary deflector; and a stationarydeflector affixed to the casing of the pump adapted to deflect the solu-10 edge thereof, and means to agitate and at the same time elevate thesolution in said tank from the bottom thereof and discharge the sameupon the deflector.

In witness that I claim the foregoing I have hereunto subscribed my namethis 6th day of :5

March, 1901. v

GEO. RUBSCH, JR.

\Vitnesses:

G. E. HARPHAM, MATTIE MCGINNIS.

